A survey map of Lyon Township in Roscommon County, Michigan. The township lines were measured in 1838 and 1839; the western township boundary line and the subdivision lines were re-measured in 1852. Note: while the map only credits John Brink for...

A survey map of the upper half of Higgins Township in Roscommon County, Michigan. The township lines were originally measured in 1838 and 1839; the southern township boundary, the eastern township boundary of Section 12 and 13, and the subdivision...

A survey map of Au Sable Township in Roscommon County, Michigan. The township lines were originally measured in 1839; the southern boundary lines of Sections 33-36 and the subdivision lines were re-measured in 1852.